Sample Calculators
The formulas used to calculate sample
size and sample error assume that a 95% level of confidence is desired.
Conservative estimates are generated assuming the most heterogeneous
population possible in the calculations. This reduces the likelihood of
underestimating sample size and sample error.
Select this option to calculate the desired
sample
size for a given population and sample error.
Select this option to calculate the
desired sample
error based on a given population and sample size.
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